Part # Application Notes Security Access Control Metering datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Using the STM1403/1404 security supervisors to clear external SRAM


Part Details:

AN2377 Application note Using the STM1403/1404 security supervisors to clear external SRAM Introduction The STM1403/1404 is a family of low power intrusion (tamper) detection security supervisors for the Point of Sale (POS) terminal market. They enable manufacturers to meet security standards such as FIPS-140 (NIST, US Dept. of Commerce), EMV Co, ISO, ZKA (Germany) and Visa PED. Until recently, many of these intrusion detection functions were implemented by using several discrete devices. The STM1403/1404 integrates all these functions into a small profile security-friendly QFN package. The STM1403/1404 meets most price, performance and board space objectives while ensuring customers are able to meet current and future security certification requirements for physical and environmental tamper detection. June 2006 Rev 1 1/14 www.st.com Contents AN2377 Contents 1 Targeted applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 High security module (HSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Security levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 STM1403 integrated functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 STM1404 for security level 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 How it works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Physical tamper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Over/under voltage detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 Over/under temperature detection (STM1404 only) . . . . . . . . . . . . . . . . . . 7 2.4 Clearing external memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.5 Clearing the external memory using a negative charge pump (STM140xB) 8 3 Efficiency results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2/14 AN2377 List of figures List of figures Figure 1. Federal information processing standard 140 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Circuit connection to drive SRAM VCC to ground (STM140xC) . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3. Circuit connection when using negative charge pump (STM140xB) . . . . . . . . . . . . . . . . . . 9 3/14


Please click the following link to download the datasheet:

Application Notes Security Access Control Metering .pdf Datasheet